Switch.



-UNITED STATES PATENT OFFICE.

GEORGE C. CARHART, AND

STEPHEN L. YOUNG. 0F SYRACUSE, NEW YORK, ASSIGNORS TO SYRACUSE UNIVERSAL MFG. C0., OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

SWITCH.

Specification of Letters Patent.

'lutented Sept. 18, 1917.

Application filed March 8, 1317. Serial No. 153.450.

To all 'whom t may frmwern:

'Bc itlmown that we, Gnome C. CAnnAnT and STEPHEN QL. YOUNG, citizens of the United States, a1id residents of Syracuse, in

5 the county of Onondaga. in the State of New York., have invented new-and useful 11nprovelnents in Switches2 of which the .fol-v lowing, taken in connection with thel accompanying drawings, is a full, clear, and exact description.

This invention relates tooertain new and useful improvements in switches' or switch locks adapted for application to switches of predetermir'ied construction, as for instance, a switch commonly used for controlling automobile or gas engine ignition.

'.` The object of the invention is to provide n. switch so constructed or so modified in construction as to he operable only by au- 20\ thorized persons e uipped with a key pelior a single individual' culiarly designed switch. A' l Other objects relate to the detalls of conf i' struction by means of' which the primary 25 Objectis attained in a preferred manner.V

In the drawings-l Figure 1 is a plan View of the switch.

Fig. 2 is a section through the switch beneath the plato hereinafter described.

Fig'. 3 a section similar to Fig. 2 taken beneath the disk hereinafter described;

Fig. 4 is a section on linc 1r-fl, Fig. l.

5 is a section on liuc 5-, Fig. l.

Fin. 6 is a section on line- (3--6` Fig.

Fig. 7 isjf nersiwctivc View of the disk.

FigR is an elevation of a key.

The switch. as siioirn, comprises a rupshapvd casing --A- of ilisulating or other suitable material containing stationary coutacts --2 and and a movable sliding Contact --'l' mounted upon a switch member -5 which member is in turn mounted upon a collar -('r---, the collar 'being rotatahly'7 mounted upon a hearing -7- comprising a substantially c vlimirical tubular portion --8-- and a hase --9--, the hase being mounted sulmlantlally centrally-of the casingr `-l-- and secured to thv casing in amy e-.uitahlc and well known manner.

'llhe collar -l-- iu the known switch is orovidrd with grooves -'l0-- f liarnetrically disposed l'or riwcivingf a suiahle key to turn .he collar. the switrh member. and if able Contact i, a iinoan .tac-y being provided with projections adapted to resiliently seat within the tubular portion --Bf-.

A washer -11- is litted over the collar --6- and rests upon the uppersurface of the switch member -5- and is adapted to space the circular disk 12- rom contact with the switch member and with thecont'acts --2-, the disk being of suliicient diameter to cover thc contacts -Q-L and -4- and its periphery beingevcn and of cir cular conformation a fi'ordinpr no facility for gripping the disk except in the specific manner hereinafter described.

The annular disk 12 is provided with lugs -L"f-` in this instance dialnetrically disposed and projecting'inwardly and'somewhataxially from the inner edge of the disk and adapted to be seated respectively in grooves -fl0--. i

In order to positively hold the disk 12- rigidly secured to the collar --`(r-, a suitable screw I4- is provided having its screw portion prcferalily tapered and of a diameter adapted toforce its way into and form cooperating' threads upon the tubular portion -S-A oi.' hcai ing -T-g the bearing being preforahlj.7 formed of sonic soft metal such as copper. while the screw` may be formed of hardened metal.A such as suitahl'e characters of steel. The screw is provided with an enlarged latcrally extending head -5 adapted t'o Contact with the 'upper surface of bearing --7- and overlie the grooves '-10 with lugs --12'- therein.

A. suitable cap A -U'ris providedfor covering the screw `--1'l-- and acting in combination with a plato 17-m lor inclosing all of the movable portions of the switch.

As sl'.o\\'n,thc plato --i7-- is p o-.idrd with a (lished or ,iflset portion -1t1-- of a diameter substantially thc saine as lhe d1- :mieterv of disk -l2- to form a chamber between the disk -12 and the oll'sot porthm-18- within which key parts, heroina'ftcr described, aro adapted to more.

For the purpose of lockingr the plate -llm to disk --l whcn thil switch is in neutral position.` the disk is provided with a pair of langes -1!l-- stamped from in terior portions of the disk and extending upn-ardly and inwardly and ovvrhanging the hody of the disk, while thc plate is provided with counting return-bent ange-s -E`5 l engaging thc flangcs It-L when the switch is iu neutral position, and preferably, t0 prevent any rotative movement of the plate, portions -21 are stamped or otherwise pressed out and adapted to cog-.ige bosses upon casing sb-J to prevent rotative movement in either direction.

f The disk -12- may be provided with any suitable number, in this instance two, openings -22- adapted to receive projections -23 upon a key 24-V to turn the disk and thereby move the switch element -4-. The plate -1'lis'provided-with radial recesses -.-25-, the cap -167- being provided with radil recesses 26 ada ted to be brought into registration with t e recesses -25- to permitI the passage of the key through the combined recesses, the key havin an end ortion 27- adapted' to exten underneat the dished portion -18- of the plate to prevent removal of the key except when tilted.

The interior of the casing --1- is thereby rendered entirelyeinaessible except when the' switch shall moved to closed position by a. predetermined key to diseugage the interlocking connection of the flanges -1 9 and -20-.

The cap I6- preferable has its lower edge flanged outwardly so as to bc of renter diameter than the central opening in 'platc -17-, to prevent removal of the ca in assembled condition of the switch.

The key receiving openings in disk -lfma be formed ut any desired points int-he dis and may .be of any desired number,

thereby permitting the manufacture of an innumerable number of switches each adapted to b e operated by a special key of predetermined construction different from the keys adapted for operating the other switches.

Although I ha vc shown and described one specific constructiim and details thereof as perhaps perfcrable, l do not. desire to limit myself to any specific construction, form or arrangement of the parts, iis main changes may be made in cach and4 all of the same without departing from thu invention as sot. forth in thc appended claitns.

that I claim is:

1. Inn switch a. base, a-dn-arng of relatively soft metal mounted! on the base` a, collar mounted on thc bearing` a. disk mounted on the collar1 and a screw of relatively hard metal secured to the hearing and adapted to forni its own co-actiug thread in said bearing and operating to hold .said disk in position on said collar.

2. In a switch a base. a hearing mounted substantially centrally of thc hase. a collar mounted on the bearing, a disk mounted on the collar, and a screw having a threaded relation `with the'bearng and operating to hold said disk in position on said collar.

3. In a. switch a base, aV bearing` mounted substantially centrally of the base,4 a collar mounted on the bearing, a disk mounted on the collar, and n screw having a threaded rclntion with the bearing and provided with an enlarged head overlying a portion of said disk and operating to hold said disk in position on said collar.

Ll. In a switch u. base, a bearing mounted on the base, a collar rotatably mounted on the bearing and provided with a recess, n disk mounted on the collar and having a vflange positioned in said recess, and screw means for holding said flange in said recess.

5. In a switch a base, a bearing mounted on the buse, u collar rotatably mounted on the bearing and provided with a recess, a, disk mounted on the collar and having a {lange positioned in said recess, and a screw having a threaded relation with said bearing and provided with a portion overlying said rcross.

(i. .in a switch a base, a bearing of rolativcly soft metal mount-ed on the base, a collar mounted 'on the bearing` a disk mounted on the collar, a screw of relatively hard metal secured to the bearing and adapted to form its own enacting thread in said bearing and operating to hold said disk in position on said roller, a cap cmering the scri-.w` and a closure-plate engaged with the cap.

covering thc screw, and a closure-plato ens,

gaged with the cap.

8. ln a switch a base. a bearing mounted on thc hase, a collar rotatably mounted on the hearing and provided with a recess, a disk mounted on thc collar und havinga flange positioned in said recess. o, screw having a threaded relation with :said bearing and provided with n portion overlying said recess. a rap cm'ering the screw.I and a closure-plate engaged with the cup. y l

il. In a switch a base, a hearing of rela tively soft. metal mounted on the base, a collar mounted on the bearing, a disk mounted on the collar, n screw of relatively hard metai secured to the bearing and adapted to form its own coactin thread in said bearing and operating to hoiil said disk in position on said collar1 a rap covering the screw and provided with a flanged basin and a closure plate having an opening fitting over the cap and of less diameter than the flanged base of the cap.

1U. ln a switch a hase, a bearing mounted substantially multi-ally of the buse. aA collar mounted on the bearing, a. disk mounted on thc collar, a screw having a. threaded relation wltn the lwarinxv and operating to hold 7. Ina switch a base` n bearing mounted said disk in position on said collar, a rap covering the screw and provided with a flanged base, and a closure-plate having an opening fitting over the cap and of less diameter than the flanged hase ot' the cup.

11. In a switch a base, a hearing mounted on the base, a collar rotatably mounted on the bearing and provided with a recess, n disk mounted on the collar and having :i flange positioned in said recess, a screw having a threaded relation with said bearing and provided with a portion overlying said recess, a cap `covering the screw und provided with a flanged base, and a closure plate having an opening fitting over the cup and of less diameter than the llanged base of the cap.

12. In a switch a base, a bearing of relatively soft metal mounted on the hase, a collar mounted on the bearing, a disk mounted on the collar, a screw of' relatively hard metal secured to the hearing and adapted to form. its own cri-acting thread in said bearing and operatinLY to hold said disk in position on said collar, n cap coveringthe screw, a closure-plate engaged with the cap, key co-acting means in connection with said disk, and slots in said plate permitting passage of a key to said key co-acting means.

13.- In a switch a base, a bearing mounted substantially centrally ot' the hase, a collar mounted on the bearing, a disk mounted on the collar, a screw having a threaded relation with the bearing and operating to hold said disk in position on said collar, a cap covering the screw, Aa closure-plate engaged with the cap, key co-acting ineens in connection with said disk, -and slots in said plate permitting passage of a key to said key co acting means.

14. In a switch a' hase, a bearing mounted on the base, a collar rotatably mounted on the bearing andpnovided with a recess, a disk mounted on 'the collar and having a flange positioned in said recess, a screw ha v# ing a threaded relation with said bearing and provided with a portion overlying said recess, a cap Acovering the screw, a closure plate engaged with the cap, key co-acting means in connection with said disk, and slots in said plate permittiiig passage of a key to said key co-acting means.

15. In a switch a base, a hearing mounted substantially centrally of the base, a' collar mounted on the bearing, a disk mounted on the collar, a screw having a threaded relation with the bearing and operating to hold said disk in position on said collar, a cap covering the screw, a closure-plate engaged with the cap, key (so-acting means in connection with said disk, and slots in the plate and cap adapted to be brought into registration to: permit passage of a key to said key co-acting means.

16. In a switch a basan bearing secured to the hase, a collar rotntal'lly mounted on the hearing, n disk secured to the collar und having key courting nnuns, and :1 closure'- plate secured to the hase and having an oli set portion ol' a diameter substantially equal to and registering with the disk and pro` vided with slots pcrxnittii'xg passage oi' a ke),r to the key cti-acting means.

17. in a switch a hase, n bearing secured to the base, a collar rotatably n'lounted on the bearing', a disk mounted on the collar und having key (1o-acting means, a screw having' a threaded relation with the bearing and adapted to hold the disk in position on said collar, a cap covering the screw, and un annular closure-platc fitting over the cap and having u dished portion forming with the disk a key-receiving chamber.

18. ln :i switch a hase, a bearing secured to the hase, :1 Collar rotatably mounted on the bearing, :1. disk mounted on the Collar and having key ro-acting means, a screw having .l threaded relation with the hearing and .adopted to hohl the dish in position on said collar` a ca p covering' the screw, and an annular closure-plate fitting over the cap :1nd having a dished portion forming with the disk n key-rceeiving chamber, said. plato provided with a slot permitting passage of' a key into said chamber.

1f). ln u switch a hase, a bearing secured to the hase, a collar rotatably' mounted on the hearing, a disk mounted on the collar and` having key co-acting means, a screw having a threadei'l relntionwith the bearing and adopted to hold the disk in position on said collar` f1 cap covering the screw, and an annular closnrcplatc fitting over the cap and having n dis-hed portion forming with the disk u lie ,freceiving rhaml'ier, said plate and cap provided with registering openings permitting passage of a key into said chamber.

20. In a switch a base, a bearing of relatively soft metal mounted on thebase, a collar mounted on the bearing, a disk mounted on the collar, a screw of relatively hard metal secured to the bearing and adapted to .form its own co-acting thread in said bearing and operating to hold said disk in position on said collar, a cap covering the screw, and a closure-plate engaged with the cap, and flanges on the disk and plate interlocked when the switch is in neutral position. Y

21. In a switch a base, a bearing mounted substantially centrally of the baise, a col-lar mounted on the bearing, a disk mounted on the collar, a screw having a threaded relationlwith the hearing and operating to hold said disk in position covering the screw, a closure-plate engaged Awith the cap, and anges on the disk and plate interlocked when the switch is in neutral position.

22- In fwh. ik bam, a bearing mounted 0n thg 8i what rotatably mounted on Q5@ mutig' and provided wlth a recess, a, digi? mimntad' on the collar und having a,

Hnge, ptoned in said recess, a sex-ew hevn a. thlnded relation with' said bearing` @Il v provided with?, prtion overlying said Recess, a. cap eovermg the screw, a closureplebe engaged with the cap, and anges on the disk and plate nterlocked when the 10 4switch is in neutral position.

`In witness whereof we have hereunto set our hands this 22nd day of Februar 1917.

GEORGE C. CARH RT, STEPHEN L. YOUNG. Witnesses:

E. A. THoMPsoN, M. VIOISA HowLANn. 

